
Total Traffic Volume & Performance in Kittitas County, Washington
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,711 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 16.3% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 34.5 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 13.7% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 45.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $89,588 |
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The average monitored road in Kittitas County, Washington carries 3,711 vehicles per day. Across its 581 miles of monitored roads, that adds up to 3,473,823 vehicle-miles traveled per day (≈1.3 billion per year). About 1 in 6 vehicles is a truck, well above the 7.1% across Washington - a freight-heavy mix.
Traffic 49% below the Washington average
At 3,711 vehicles per day, the average monitored road in Kittitas carries 49% less traffic than the state average of 7,322, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, Kittitas accounts for about 2.2% of Washington's statewide total of vehicle-miles. Kittitas carries more traffic than 55% of counties in Washington.
The average trip takes 34.5 minutes, on par with the state level. Its average travel time of 34.5 minutes is longer than 66% of counties in Washington.
At 31% lower than the state level, the 13.7% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Kittitas County, Washington
| Traffic | vehicles per day9,382 |
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| Trucks | 18.1% |
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| Average travel time | 69.9 min |
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| Congestion ratio | 19.6% |
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| Drivers’ average age | 47.4 yrs |
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| Drivers’ average income | $93,797 |
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The vast majority of driving in Kittitas County, Washington happens on highways: 86% of all vehicle-miles. The average highway carries 9,382 vehicles per day, 215% more than the average non-highway road in the same area, which carries 2,975 vehicles per day.
With 46% of the road miles (269 miles in 639 segments), highways punch above their length, carrying 2,984,582 vehicle-miles traveled per day (≈1.1 billion per year).
81% of counties in Washington move less traffic on their highways.
Freight-heavy highways
The concentration of trucks on highways (18.1%) is 90% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.
94% of counties in Washington see a lower highway truck share than Kittitas's 18.1%. 78% of counties in Washington see fewer highway trucks per day than Kittitas's roughly 1,694.

Non-highway Traffic in Kittitas County, Washington
| Traffic | vehicles per day2,975 |
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| Trucks | 5.5% |
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| Average travel time | 30.0 min |
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| Congestion ratio | 12.9% |
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| Drivers’ average age | 42.9 yrs |
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| Drivers’ average income | $83,710 |
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Only a small share of travel in Kittitas County, Washington happens on local roads: 14% of vehicle-miles. A typical local road sees 2,975 vehicles per day.
Spread over 312 miles and 4,925 segments, 54% of the road network, local roads carry a lighter load per mile: 489,241 vehicle-miles traveled per day (≈179 million per year). The truck share on non-highway roads is 5.5%.
Drivers from higher-income areas than 79% of counties in Washington
Non-highway roads carry a truck concentration that's 69% lower than the highway network.
Non-highway congestion (12.9%) runs 34% lower than the state average, pointing to smoother local traffic flow.
Kittitas's average driver income is higher than 79% of counties in Washington. The driver population here skews younger than 66% of counties in Washington.